I have a bunch of confidential PDF files that I need to share with clients, but I want to make sure they are fully secure before sending them. I am looking for a quick and effective way to add security to my PDF documents instantly, ideally something that can add password protection or restrict copying/editing.

I do not want to compromise the quality or formatting of the PDF while securing it. Can someone recommend a reliable method or tool that can help me do this instantly?

If you are facing difficulty in this task, I recommend a reliable application like Softaken PDF Locker. This freeware utility gives you the freedom to add security by applying a strong password to your sensitive PDF documents. It supports all user and owner passwords. The useful software maintains the original layout, images, and structure. This advanced utility is built for both technical and non-technical users, so you can use it without facing issues. It works offline and does not require Adobe Acrobat. Plus, this software smoothly runs on all Windows versions OS.